Pot-mouthpiece wiper for type-casting machines



l y l 1,636,430 July 19, 1-927l i G,\PANKUCH POT MOUTHPIECE WIIPER FORTYPE CASTING kMACHINES Filed July 24A 192e Patented July 1K9, 192,7.

nonce Luxeon; Eer. pcanarini.mfrn, fonio.

Application iliied 'July 54;

`This invention relatesto a pot mouth ieee Wiper for type castingmacl:1ines, an `,has

for its Lobject to provide anautomatic"ide-l vice for cleaning the faceofthe mouthpiece 51 after each casting operatiom y 'In machines ofthecharacter alnoverlze-` ferreldto, akpot containing molten'metal isintermittently moved to bring its outlet ,on

mouthpiece into engagement with-the face 1o: of a type mold andthe metalis forced under pressurefrom the pot intothe mold; n-

lessftheffaces of the mold and pottmo'uth piece aremaintained in perfectengagement durm the assae'eofmctalfrom the mouthe p s y t lbf pieceintovthe mold, there W1ll`he a leakage ofmctal `loetween they opposedfaces of-` the mouthpiece and mold,` and ifv any metal solidifies on the`face of thepot mouthpiece the result will be lto` increase theffgapbe-I tween the mouthpiece and mold uponsubsequent engagement thereof,causing increased Waste oi metal and necessitating therstoppage ofthemachine at intervalsto clean the mouthpiece. v

A perfectly .accurate fit fbetween H the mouthpiece and mold isexceedingly;` difficult to maintain in thepractical operation `of themachine, and consequently there is ya `loss offmetal occasioned byleakage and loss fot time.v occasioned by frequent stoppages forcleaning the mouthpiece.

An important object of the presenty invention is tov provide means-forkeeping the fagceof the mouthpiece c'lean'so that there wil be a minimumlossof metal due to leak age-and the loss of timeoccalsioned bythestopping of the machine forthe purpose of cleaning the Vmouthpiece,.will be eliminated.`

A further object -is topr'ovide a wiper` 40 on gthe moldcarrier .Whichmoves past the mouthpiece immediately ybehindthe/mold and Wipes `theface of themouthpiece immediately `after each discharge `of metal'therefrom, to keep thefjface-ofcthe mouthpiece freeffrom pot' metal. 4i

further object is to provide afwiper on-the mold carrier which will notvrinterfere with the operation of Vthe slug trimming knife commonlyemployed in machines of lthis character, which sweeps across the*` faceofthe mold to ltrim excess' metalffromthe base of'theislug therein.

`A further object ofthe invention is to provide a yieldablymounted'wiper `which isl so supported that it .will beheld flat-:againstdrawings 'f ormiiig a, part'` ofdthi t Section take Y ing-rearwardlyfromcnenend of ltheerin?l me. `:sami 11a. new.'

the' face of? thel potl mouthpiece" yvih/ile it*` is Inpvin across thesame, i "jthe'v abv rand otherl objects in. View, the sinventionljmay he'."s`aid r to comprise 'the v a drawings hereinafter descrihed'iand parlarly f set Vforth'gingthe appended claims, fti gether: -vvith Ys'u'chvariations and fmodiiicfa tions there'of'as "will he apparent tuvoneSkilled .inthe are to' which'itheinvennn' afp-i pertains.' l l 1.Reference Should Ahe h'adtoltheffiaec in Eig. 5. fflgS 'isaperspectiveviwof the'fxviper v seitting' member, Fig 9 a sectionalperspective view sho'vving the wiper .releasing in 'place' `on` thelmold"disk,isupporting larin'v Ref` minata-the eccitavingfdlgawgs', thepresent invention is shown .applied'-f to" theinojlddisk lfof avveltkiloiwn typefeast-4v ing machine. Thisdisk isiotatahly mount-l,edon afstudi fwhichl is, secliredvto afsfn' Porting erm,y 3 WhieiiVil)eifllel`fini-'des@ y adjacenttherear face of thefdiskfandfforms apart Qffhejeidewhieh lfermseelsnppet for" the, dek, agreeing anaizmifiintima.`

,Whichi'is adapted -toff kslide ,in ai iedf guide? way .in the-machine]The mold, disk, s 1 `is intermittently rotated duringfthe operation- Of'the'v meeliine ibyl means i 0f -Sutblegaririe meshing vith. thetoothedperiphery dof 'the` id iel'l.z is provided with a efe-prenne 6each Ot'whih, is `@dimitedito` a "mm whichis einer angapertureandisadaptd te QSUI' `3 which lies upon the outer face of the disk andis secured to the disk by means of screws 9.

The molten metal is delivered into the mold from a suitable molten metalpot 10,`

a portion of which is shown in Fig. 4. The pot is provided with anoutlet passage 11 and with a lat mouthpiece 12 provided with a row ofsmall openings 13 which arev adapted to register with the slot of themold when the pot is shifted toward' the disk to bring the potmouthpiece into engagement with the mold. In theoperation oll lthemachine the disk 1 is stopped with a mold in alignment with themouthpiece, the mouthpiece is brought into yengagement with the mold andthe mold illed with molten metal. The pot is then retracted 'and:rotation is imparted tothe mold disk. The supporting arm 3 carries atrimmer knife 14 which engages the inner face of the mold as the moldpasses the same and trims the base of the slug in the mold. The 'partsso` far deL vscribed are all old` and well known and are body 'described merely for the purpose of making 4 and shape as a'mold, beingprovided with an attaching flange '16:adapt'ed to be secured to theouter face oi' the mold disk by means'of attaching screws17 and having aortion 18 which is adapted vto lit in one ofp the mold receivingopenings 6 of Vthe disk. The frame 15 is provided with a longitudinalslot 19 in which is mounted a wiper supporting arm 2O which is pivotedat its end upon ay pin 21 extending across-the 'slot at one end thereof.lThe arm 2O has 4attached thereto a flat, resilient metal bar 22 whichextends beyond the end thereol4 and is provided adjacent `its outer endwith spaced, inwardly projecting :lugs 22L between which is mountedr achannel shaped holder 23 which is connected adjacent its center to thelugs 22 by a transverse pivot 24. The holder 23 forms a support for awiper block 25 which is preferably .composed or' asbestos impregnatedwith graphite. The arm 2() is normally held in a retracted position inwhich the wiper block 25 lies entirely within the. plane of the innerface of the disk by means of a spring 26 which is connected at one endto a pin 27 carried by the arm 20 and the other end to 'a pin 28 fixedto the supporting frame 15'. .For shifting the Wiper supporting arm l20outwardly against the action of the spring 26 to bring the wiper intomouthpiece engaging position there is provided an actuating lever 29which is pivoted intermediate its ends upon a pivot pin 30 extendingacross the slot 19 parallel with the pivot pin 21 and intermediate theends of the slot.V The action of the spring 26 is to normally hold thearm 2O and resilient extension 22 flat against the inner side ofactuating lever 29. However, if the actuating lever 29 is rocked aboutits pivot 30 in a direction to move inwardly the end of the lever 29which is nearest the pivot 21 of with the arm 20. -The latch 31 isconnected to the lever 29 by a pivot pin 32 and is pressed towardengaging position by a suitable spring 33. The latch is also providedwith a retaining shoulder' 34 which engages, a fixed lug 35 integralwith the frame 15' and projecting into the upper portion of theslot 19.From the shoulder 34 to the outer end thereof the latch 31 has a beveledface 36 which engages with the inner edge of the lug 35 when the wiperis in retracted position and which projects beyond the. inner face olthe disk when the latch is engaged with the lug 35. The lever 29projects beyond the free end of the wiper carrying bar 22 and at the endthereoiI is bent inwardly past the end oli-the wiper to provide a triparm 37 which has a beveled end 38. A lixed trip member 39 is securedtothe disk supporting frame adjacent the point oit con nection of the arms3 and 4 thereof, and this trip member is provided at its upper end witha hook portion 40 which is adapted to be placed over the upper edge ofthe slide arm 4 which projects beyond the inner side of the arm 3 and atits lower end with a flange 41 which is adapted to extend beneath thelower edge of the disk supporting ai'in The trip member 39 is rigidlysecured in place on the disk support by means of a set screw'42 in theflange 41 which is adapted to be screwed into engagement with the loweredge of the supporting arm 3. The end of' the hook' portion 40 isVprovided with a beveled edge 43 which projects inwardly to adjacentthe' inner face of the mold disk and lies in the path of movement of thebeveled end 33 of the trip arm 37 of the actuating lever 29. Secured tothe opposite end of the disk supporting arm 3 there is a second tripmember 44 which is substantially U-shaped and adapted to lit upon theupper edge of the supporting arm 3. The U-shaped member 44 carries a setscrew 45 by which it may be rigidly clamped to the supporting arm 3 andis provided with an extending lug-46' which is positioned adjacenttheinner. :tace` `ofk the mold disk and lies in the path of movement of thebeveled portion 36 of the;

latch l31 when the latch has its shoulder 34 in engagement with the lug35.

In the operation of the machine, the mold disk 1 is intermittentlyrotated in the clockwise direction as viewed in Fig. 1 to bring a moldinto alignment with the pot mouthpiece, and after the mold has beenfilled with metal the disk is again rotated in the same direction tocarry themold past the slug trimming knife 14. The latter movement ofthe mold disk carries the wiper attachment 15 past the pot mouthpieceand during the movement of the wiper attachmentthe trip arm 37 isengaged by the beveled portion 43 of the fixed trip member 39 causingthe trip arm `37 to be forced inwardly and rocking the lever 29 upon itspivot 30 and the arm 20 upon its pivot 21 until the shoulder 34 of thelatch 31 clears the lug 35 and is forced intoy engagement therewith bythe spring 33. This movement causes the wiper block 25 to be moved out-ywardly into mouth iece engagement position and to be locked in thisposition by the latch 31. As the wiper block 25 engages the mouthpiece,it' will be pressed toward the mold disk and will be yieldingly pressedagainst the mouthpiece by the resilient arm. 22 and will be held Hatagainst the mouthpiece by reason of the pivotal connection-between theblock 25 andthe arm 22a. If any molten metal should have been depositedupon the` face of the pot mouthpiece, this metal will be entirelyremoved by the wiper block.25 in its passage across the mouthpiece,leaving the face .of the mouthpiece smooth and clean for its nextengagement with the mold. After the wiper block 25 has passed themouthpiece, the beveledv end 36 ofv the latch 34 will strike the `lug 46of the fixed trip member 44, causing the shoulder 34 to be pushed offthe lug 35 and the wiper to be retracted by the spring 26 to theposition shownin Fig. 6 of the drawing, the lever 29 being also restoredto the position shown in Fig. 6 so that the trip arm 37 will againengage with the fixed trip member 39 after a subsequent filling ofthemold. The

' wiper is thus held in extendedwiping posimold with which saidmouthpiece intermittently engages, of afwiper attachment having a frameadapted to bemounted on one of said mold supporting portions and amouthpiece wiper yieldably mounted on f said= frame.

2. In a type casting machine, the combination with the molten metal pothaving a mouthpiece and the member movable transversely of themouthpiece and having a plurality of mold supporting portions, one-ofsaid portions carrying a mold with whichA the mouthpiece intermittentlyengages, ofa wiper attachment adapted to be mounted onone of said moldsupporting portions and having a wiper movable across the face-ofr themouthpiece during movement vof said` member. f Y 3. In a type castingmachine, the combination with the molten metal 'pot having` a mouthpieceand the member movable trans-4 versely of the mouthpiece and having aplu-y rality ofv mold supporting portions, one `of' said portionscarrying a mold with which the mouthpiece intermittently engages, of awiper attachment adapted to be mounted on one of said mold supportingportions and having a wiper movable across the-faceofl the mouthpieceduring movement 'of said member, and means for automatically shiftingthewiper into and out ofrmouthpiece wiping position. f

4. In a type casting machine, the combination with the molten metal pothaving a mouthpiece and-the member movable trans'- versely lof themouthpiece and having a plu-4V rality of mold supporting portions, loneyof said portions carrying a mold with whichv the mouthpieceintermittently engages, ofa Wiper attachment adapted to be mounted onone of said mold supporting' portions and hav-ing a wiper movableoutwardly there',-` from to a position in which itA will engage the faceof the mouthpiece during movement of said member, and means controlledbythe movement of said member for shifting-the wiper to engagingposition, holding the' same yin engaging position while passing themouthpiece and retractingl the wiperpafter it has passed the mouthpiece.n

5. In a type casting machine, the combi-I nation with av molten metalpot having a mouthpiece and a rotatable mold disk having its inner faceadjacent the mouthpiece and provided with a plurality of apertures, of amold in one of thevapertures, a wiper attachment in another apertureprovided with a wiper movable toward and from the mouthpiece, and meansfor automaticallyy i shifting the wiper toward the mouthpiece and foryicldingly holding the saine in engagement therewith while the wiper isbeing carriedpast the mouthpiece, and means for automatically retractingthe wiper after it has passed the mouthpiece.

6. In a type casting machine, a rotatable

